TY - JOUR
T1 - Upper and lower bounds for three-dimensional undrained stability of shallow tunnels
AU - Antão, Armando Nunes
AU - Vicente da Silva, Mário
AU - Monteiro, N.
AU - Deusdado, Nuno
PY - 2021/3
Y1 - 2021/3
N2 - This paper deals with the determination of upper and lower bounds for the three-dimensional undrained stability of shallow tunnels. The tunnel is circular and a distance between its face and its lining is considered. The soil shear strength is modeled using the Tresca criterion. Results of the upper and lower bounds of the stability number are presented, for several geometrical and resistance configurations and their comparison with previous results is made, showing the clear improvement obtained. Finally, equations approaching the stability number are proposed.
AB - This paper deals with the determination of upper and lower bounds for the three-dimensional undrained stability of shallow tunnels. The tunnel is circular and a distance between its face and its lining is considered. The soil shear strength is modeled using the Tresca criterion. Results of the upper and lower bounds of the stability number are presented, for several geometrical and resistance configurations and their comparison with previous results is made, showing the clear improvement obtained. Finally, equations approaching the stability number are proposed.
KW - Alternating direction method of multipliers
KW - Finite elements
KW - Limit analysis
KW - Tunnel face undrained stability
UR - http://www.scopus.com/inward/record.url?scp=85098981198&partnerID=8YFLogxK
U2 - 10.1016/j.trgeo.2020.100491
DO - 10.1016/j.trgeo.2020.100491
M3 - Article
AN - SCOPUS:85098981198
SN - 2214-3912
VL - 27
JO - Transportation Geotechnics
JF - Transportation Geotechnics
M1 - 100491
ER -